From fdd0338da556fac4322e3da652d860bb9d562a4a Mon Sep 17 00:00:00 2001
From: Hanno Braun <hello@hannobraun.com>
Date: Tue, 25 Feb 2025 12:20:54 +0100
Subject: [PATCH] Track internal faces

---
 experiments/2024-12-09/src/geometry/sketch.rs      | 2 +-
 experiments/2024-12-09/src/operations/connect.rs   | 1 +
 experiments/2024-12-09/src/operations/flip.rs      | 6 +++++-
 experiments/2024-12-09/src/operations/translate.rs | 1 +
 experiments/2024-12-09/src/topology/face.rs        | 3 +++
 5 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/experiments/2024-12-09/src/geometry/sketch.rs b/experiments/2024-12-09/src/geometry/sketch.rs
index af16d62dc..654d668b9 100644
--- a/experiments/2024-12-09/src/geometry/sketch.rs
+++ b/experiments/2024-12-09/src/geometry/sketch.rs
@@ -47,7 +47,7 @@ impl Sketch {
             },
         );
 
-        Face::new(surface, half_edges)
+        Face::new(surface, half_edges, false)
     }
 }
 
diff --git a/experiments/2024-12-09/src/operations/connect.rs b/experiments/2024-12-09/src/operations/connect.rs
index c8e1a4af1..c0f6a2ceb 100644
--- a/experiments/2024-12-09/src/operations/connect.rs
+++ b/experiments/2024-12-09/src/operations/connect.rs
@@ -57,6 +57,7 @@ impl ConnectExt for Handle<Face> {
                             is_internal: false,
                         })
                     }),
+                    q.is_internal,
                 );
                 Handle::new(face)
             })
diff --git a/experiments/2024-12-09/src/operations/flip.rs b/experiments/2024-12-09/src/operations/flip.rs
index be440af7c..7fa4b59be 100644
--- a/experiments/2024-12-09/src/operations/flip.rs
+++ b/experiments/2024-12-09/src/operations/flip.rs
@@ -6,6 +6,10 @@ pub trait FlipExt {
 
 impl FlipExt for &Face {
     fn flip(self) -> Face {
-        Face::new(self.surface.flip(), self.half_edges.clone())
+        Face::new(
+            self.surface.flip(),
+            self.half_edges.clone(),
+            self.is_internal,
+        )
     }
 }
diff --git a/experiments/2024-12-09/src/operations/translate.rs b/experiments/2024-12-09/src/operations/translate.rs
index 5c8f466cc..0ab287239 100644
--- a/experiments/2024-12-09/src/operations/translate.rs
+++ b/experiments/2024-12-09/src/operations/translate.rs
@@ -17,6 +17,7 @@ impl TranslateExt for Face {
             self.half_edges
                 .iter()
                 .map(|half_edge| Handle::new(half_edge.translate(offset))),
+            self.is_internal,
         )
     }
 }
diff --git a/experiments/2024-12-09/src/topology/face.rs b/experiments/2024-12-09/src/topology/face.rs
index af5024dbd..24ed70d54 100644
--- a/experiments/2024-12-09/src/topology/face.rs
+++ b/experiments/2024-12-09/src/topology/face.rs
@@ -15,16 +15,19 @@ use super::{half_edge::HalfEdge, vertex::Vertex};
 pub struct Face {
     pub surface: Plane,
     pub half_edges: Vec<Handle<HalfEdge>>,
+    pub is_internal: bool,
 }
 
 impl Face {
     pub fn new(
         surface: Plane,
         half_edges: impl IntoIterator<Item = Handle<HalfEdge>>,
+        is_internal: bool,
     ) -> Self {
         Self {
             surface,
             half_edges: half_edges.into_iter().collect(),
+            is_internal,
         }
     }